Multiplier for cameras.



G. J. SGHAUBERTE MULTIPLIER FOR CAMERAS. APPLIOATION FILED 111.11.17,1909.

967,569. Patented Aug. 16, 1910.

GEORGE J'. SCHAUBERT, OF CHICAGO, ILLINOIS.

MULTIPLIER FOR CAMERAS.

specification of Letters raient.

Patented Aug. 16, 1910.

Application filed March 17, 1909. Serial No. 484,043.

To all whom t may concern:

Be it known thatI I, GEORGE J. SGHAUBERT, a. citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Improvement in Multipliers forCameras, of which the following is a specification.

My invention relates to a device for use in connection with cameras bywhich a series of juxtaposed negatives may be taken on single plates orfilms by successive exposures of different sections thereof. l

My object is to provide a simple. and novel construction of device ofthe character above referred to which shall be capable of being readilyoperated and by which a plurality of juxtaposed negatives may be made ona single plate or iilm without danger of exposing to the rays of lightother sections of the plate or film than the one desired to be exposedat each operation.

Referring to the accompanying drawing- Figure l is a view in verticalsectional elevation of the rear end-portion of a camera shown asequipped with a multiplier constructed in accordance wit-h my invention.Fig. 2 is a plan view, partly sectional, of the multiplying deviceillustrated in Fig. 1. Fig. 3 is a section taken at the line 3 on F ig.2 and viewed in the direction of the arrow. Fig. 4 is a perspective viewof one of a plurality of sliding sections forming a part of my improveddevice, this view showing the formation of two intersecting edges of thesection illustrated; and Fig. 5, a similar view of the same showing theopposite side of the section and the edges thereof not illustrated inthe preceding figure.

My improved multiplying device, which is designed to be located in a.camera between the lens and plate, or iilm, to be exposed, ashereinafter described, is represented at 6. It comprises a frame formedof top and bottom members 7 and 8, the lower one of which contains alongitudinally extending groove 9 along its inner side, and the upperone of which contains a similarly located tongue 10; and side-members 11and 12, shown as formed of metal strips of general U-shape which thusafford channels 12aL opening` toward the inside of the frame, thesestrips straddling the adjacent members 7 and 8 as represented in Fig. 3,in which position they may be secured in any suitable manner, as byindenting the metal as indicated at 13. It is designed that the framesupport between its sides a plurality of sections which are shiftabletherein for the purpose of affording an opening in the multiplier indifferent positions, whereby exposures of different parts of the plateor film may be made by successive operations. The particularconstruction illustrated, which has been chosen by me as showing thepreferred embodiment of my invention, is provided in a form permittingsix juxtaposed negatives to be made on the plate or iilm. The frame ofthe device contines between its members five sections 14, 15, 16, 17 and18, which may be of any suitable material, as for instance wood, thesesections being rectangular in shape and each of an area approximatelyequal to one-sixth of the area of the opening provided in the frame byits members 7, 8, 11 and 12, whereby an opening is provided between thesections and the frame approximately equal to the area of a single oneof the sections. Each of the sections is provided on two of itsintersecting edges with tongues 19 and ou its other two edges withgrooves 20, the sections being so arranged in the frame as illust-ratedas to cause all of the sections to have tongue and groove connectionwith each other and with the frameinembers 7 and S, and slidingconnection with the members 11 and 12 at the channels therein. It willthus be noted that by providing the sliding connection between each ofthe sections and the frame-members, the sections may be shifted to anyposition in the frame by sliding them upon the frame members, therebypresenting an opening in the frame at any one of six positions therein.

In Fig. 1, I have illustrated my improved multiplying device as appliedto a particular and well-known form of camera represented at 21. Thebellows 22 of this construction extends rearwardly from the suitablysupported lens-board (not shown) at the front of the camera, to a box 23of wellknown construction to which it is attached, the box beingrabbeted at its rear face as indicated at 24 to provide a seat 25 forreceiving a removable and replaceable reversible camera-back 26, whichis held in place against the seat 25 on the box 23 by engagement of pins27 thereon, with apertured spring-fingers 28 on the box 23. The drawingshows a plate-holder 29 confined between ianges 30, anking an opening 31in the box 23, and the spring-tensioned ground-glass holder-frame 32, asillustrated in Fig. 1. The camera-back 26 is rabbeted at its front faceto provide an opening 33 coincident with the opening 31, but of largerdimensions, the wall of the opening 33 being undercut to afford a groove34. The particular construction of multiplier shown is designed to beinserted into the opening 33 and therein held in place by any suitablemeans, as for inst-ance by a tongue 35 formed on the frame-member 8 ofthe multiplier, this tongue being adapted to be inserted into the groove34C upon the act of assembling the multiplying device with the back 26.

The operation of the device is as follows: Assuming the device to bepositioned in the back 26, as illustrated in Fig. 1, the sections of thedevice positioned as illustrated in Fig. 2, and the plate-holder 29removed, the operator focuses the images upon the ground-glass carriedby the holder 32 in a square marked thereon corresponding to theposition of the opening represented in Fig. 2 and afforded between thesections and the "frame-members of the multiplying device.

The plate-holder may then be inserted into the back 26 and an exposuremade in the ordinary way. The operator then releases the back at itsupper edge from the box, and swings the back to a position in which hemay have access to the multiplying device to shift its sections.Assuming a second exposure on the plate is desired to be taken throughan opening corresponding to the position occupied by the section 14, asrepresented in Fig. 2, the operator slides the section 14:, at itstongue and groove connection with the adjacent sections and framemember7, to the right in Fig. 2 to present an opening between the sections andthe frame-sides at the point coincident to that previously occupied bythe section 14, whereupon the operator again manipulates the camera tocause the image to be centered on the section of the ground-glass nextto the section corresponding to the one previously exposed. Theplate-holder may then be inserted into place in the back 26 and theexposure made. The back 26 is then again swung away from the box 23 andthe section 15 moved to the right to afford an opening in the frame inthe upper left-hand corner thereof, viewing the device as illustrated inFig. 2. An exposure is made through this opening upon the plate ashereinbefore described. Exposures for the remaining portions of theplate are likewise made by shifting the sections 16, 17 and 18' topresent, by successive operations, the opening between the sections andframe-members at points corresponding to the positions occupied by theselast referred to sections in Fig. 2.

If desired the sections may be formed with sockets 36 which affordfinger-grips, permitting the operator to readily shift the sections inthe frame to the positions desred, though it will be understood thatinstead of providing the sockets 36 any other means may be provided forthis purpose.

Vhile I have illustrated my invention as embodied in a device forenabling 6 juxtaposed negatives to be taken on a single plate or film, Ido not wish to be understood as limiting my invention to a device fortaking this particular number of negatives, as it may be embodied in aconstruction for taking il, 8, 9, 10, 12, or in fact any number ofnegatives provided such number be a multiple of two or three.Furthermore, by describing my invention as embodied in a frame having acertain feature which enables it to be conveniently secured in positionin a camera of a particular construction, I do not wish to be understoodas confining my invention to any particular form of frame, as it may bemodified in various ways to adapt it for association with cameras ofdifferent forms without departing from the spirit of the invention.

lha-t I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a camera, of a multiplying device, for thepurpose set forth, interposed in the camera between the lens thereof andthe sensitized plate or film, comprising a frame containing an opening,and a series of rectangular sections supported inthe opening, saidsections being of a number insufiicient to fill the opening in the frameand having sliding connection with each other, for the purpose setforth.

2. The combination with a camera, of a multiplying device, for thepurpose set forth, interposed in the camera between the lens thereof andthe sensitized plate or film, comprising a frame containing an opening,and a series of rectangular sections supported in the opening in theframe, said sections being of a number insufficient to fill the openingin the frame and having tongue and groove connection with each other.

3. The combination with a camera, of a multiplying device, for thepurpose set forth, interposed in the camera between the lens thereof andthe sensitized plate or film, comprising a frame containing arectangular opening, and a series of rectangular sections supported inthe opening, said sections being of a number insuflicient to fill theopening and having sliding connection with each other and with theframe.

4. The combination with a camera, of a multiplying device, for thepurpose set forth, interposed in the camera between the lens thereof andthe sensitized plate or film, comprising a frame containing arectangular opening, opposed frame-members which are tongued and groovedrespectively, and a series of rectangular sections supported in theopening, said sections being of a number insuliicient to fill theopening, and each having tongues and grooves on its opposed edges atwhich the sections have sliding connection with each other and with theframemembers, for the purpose set forth.

5. The combination with a camera, of a multiplying device, for thepurpose set forth, interposed in the camera between the lens thereof andthe sensitized plate or lm, comprising a frame containing a rectangularopening and a series of rectangular sections supported in the opening,said sections being of a number insufficient to fill the opening andhaving sliding connection with each other, each of said sectionscontaining a socket in its face.

6. In combination with a removable back of a camera provided with a seatfor an adjunct thereto, of a rectangular multiplying device comprising aframe adapted to be applied to said seat and containing an opening, andparallel series of sections supported in the opening in the frame andsliiftable therein to present an opening in the frame in differentpositions therein, for the purpose set forth.

7. The combination With a camera, of a multiplying device, for thepurpose set forth, interposed in the camera between the lens thereof andthe sensitized plate or film, comprising a frame containing an opening,and parallel series of rectangular sections supported in the opening,said sections being of a number, lacking one, to fill the opening in theframe and having sliding connection with each other at their edges, forthe purpose set forth.

8. In combination with the back of a camera, of a rectangularmultiplying device secured therein in front of the plane occupied by thesensitized body to be exposed, comprising a frame containing an opening,and a series of rectangular sections supported in the opening, saidsections being of a number insufficient to fill the opening in the frameand having sliding connection With each other, for the purpose setforth.

GEORGE J. SCHAUBERT.

In presence of RALPH A. SCHAEFER, JOHN ViLsoN.

